What is the primary function of the word 'like' in a sentence?

The primary function of the word 'like' in a sentence is to indicate a metaphorical comparison. When used in this context, 'like' serves to draw parallels between two different things, highlighting similarities that may not be immediately obvious. For instance, in the sentence "Her smile is like sunshine," 'like' establishes a comparison between her smile and sunshine, suggesting warmth and brightness.

While 'like' can sometimes introduce other grammatical structures, such as noun clauses in informal speech ("It’s like I told you"), its most recognized and traditional role is as a comparative word. This comparative usage enriches language by allowing for vivid imagery and more expressive descriptions. Understanding this primary function of 'like' is essential for interpreting its role in various contexts and enhancing one's writing and reading comprehension skills.